110 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



Sertidaria gracilis, Hassall. 

 This species is recorded from Blackpool and from Bangor 

 by Pennington.* 



Sertularia operculata, Linnaeus. 



Recorded by Byerley as having been found without polyps 

 by Mr. Marrat. Mersey (J. S. Hicks). Very common, dead 

 (A. 0. Walker). 



A large number of colonies were obtained from Hilbre 

 Swash on May 9th, 1885, and on June 20th ; and also from 

 the Welshman's Gut, on June 20th. 



Dredged during the cruise of the "Hyaena" on May 25th 

 near Puffin Island. 



Sertularia filiculay Ellis and Solander. 



Recorded by Byerley as being ** a general but not a very 

 abundant species." Mersey (J. S. Hicks). 



Dredged in Hilbre Swash on June 20th, 1885, from a 

 depth of ten fathoms. 



Several small colonies were obtained from the Isle of 

 Man. No gonothecae were present. 



Sertularia abietina, Linnaeus. 



Recorded by Byerley as being common upon the coast. 

 Mersey (J. S. Hicks). Common, dead (A. 0. Walker). 



One small colony was found at Penmaenmawr in July, 

 1885. Some large colonies were dredged off the south end of 

 the Isle of Man in August, 1885. One of these colonies was 

 much covered by specimens of Cr'isia de^iticulata. Dredged 

 at Hilbre Swash on June 20th. Several large colonies were 

 dredged from Welshman's Gut on June 20th. Dredged off 

 the Great Ormes Head on May 23rd, during the cruise of the 

 ''Hyaena." 



Sertularia argentea, Ellis and Solander. 

 Recorded by Byerley as being very common. Mersey 



* British Zoophytes, 1885. 



